package thread;

import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

public class ThreadPoolDemo {
    public static void main(String[] args) {
        ExecutorService threadPool= Executors.newFixedThreadPool(3);
        for(int i=0;i<5;i++){
           Runnable r=()->{
                    try {
                        Thread t = Thread.currentThread();
                        System.out.println(t.getName() + ":正在执行一个任务");
                        Thread.sleep(5000);
                        System.out.println(t.getName() + ":任务执行完毕");
                    }catch (InterruptedException e){
                        e.printStackTrace();
                    }
            };
            threadPool.execute(r);
            System.out.println("将一个任务交给了线程池");
            //threadPool.shutdown();
            threadPool.shutdownNow();
            System.out.println("停止线程池");
        }
    }
}
